Film-drying nozzle



R. C. HUBBAHD.

FILM -DRYING NOZZLE.

APPLICATION FILED PHIL-9, 1921.

yanted @610.211, 1922.

MI I

I w. I

www

LII IIIII IIII WIT/VESSES nur RQSCOE CONKLING HUBBJRD, OF NEW YORK, N. "1?.

' FILM-DRYING NOZZLE.

Measles.

To all whom t may v concern.'

Be it known that I, Roscoe C. HUBBARD, a citizen ofthe United States, and a resident of thecity of -N ew York, borough of Manhattan, in the' county and State of New York, have invented a new and Improved- Film-Drying Nozzle, of which the following is a description'. ,j

My invention relates to the drying of mo- 10, tion picture films and has for its general object to provide nozzles adapted to deliver jets of air against the film to dislodge water therefrom, the device being more p-articularly intended for blowing the water from the film immediately before entering the dr er to complete the drying operation.

ore specifically, the 'invention has for its object to provide for subjecting the film to an equal pressure at opposite sides of the film and to provide means for insuring the guiding of thefilm past the air nozzles without rubbing.

Reference is to be had to the accompanying drawings forming a part of this specific'ation, it being understood that the drawings are merely illustrative of one example 'of the invention.

Figure 1 is a perspective view of a filmj drying apparatus having my improved noz- A zles disposedadjacent thereto;

Figure 2 is an enlarged transverse vertical section of the nozzles;

Fi re 3 is an inverted planview ofthe nozz es;

Figure 4 is a section taken longitudinally tlrough a pair of the iding rollers;

Figure 5 is a side e evation of the nozzles; Figure 6 is a m0' means.

In carrying out my invention in practice, I provide integral air nozzles 10 communieating in common with the body 1l of the nozzles adapted to connect with any source of supply of air under pressure, there being 'shown a pipe 11a connected to said body perspective viewiof the guidi' and having a valve 11". In the illustrated form the nozzles are arran ed in connection with tanks -B conventionay shown and in practice, these maybe taken as developing, washing, fixing tanks, etc. From the final tank the film .AV passes over a suitable arlrangement of guide rollers C through a washing tank D and from said tankthe film A` asses over additional rollers E to up r an lower guide rollers F, F", and is ld Specification of Letters Patent. Patemrtggjl Fqb, 219 i922', application mea February e, 1921.

Serial No. 443,656'.

through an opening g, into a dryer G which may be of any approved form. t

The nozzles 10 aHord a broad passageway 14 therebetween for the vertical moving film portion a, said passageway narrowing adjacent to the discharge ends of the convergent tips 12 ofthe nozzles 10. The tips 12 of the nozzles are convergent and have elongated slots 13 through which the air may escape at opposite sides of the film. For convemence in the manufacture and assemblage of the nozzle parts, the tips 12 advantageously are cast separate, said tips having flange lugs 15 corresponding with the similar lugs 16 on the fixed portion of each nozzle 10, the connection being completed by bolts or screws 17 passing through said flanges. The airis discharged from the convergent nozzles 10 at the slots 13 in the opposite direction from the travel of the film and obliquely against the film portion a at opposite sides thereof. 'Ihe air jets serve to blow most of lthe moisture from the film leavmg very little moisture on the film when it enters the dryer G.

I provide guide rollers for the film above and below the discharge ends of the nozzles 10, they arrangement being a follows: A hanger 19 is secured at its upper end to a member 2O at the juncture of the pair of nozzles 10 with the body 11 of the nozzle, a screw 21 and pin 22 being employed for the purpose in the illustrated example. On the-hanger 19 I provide a pair of guide rollers 24, 25 in the passageway14 above the A discharge ends of the nozzles 10 and a similar pair of rollers 24, 25 on said han er below said convergent ends of the nozz es. The rollers are usually in practice of hard` rubber and turn on spindles 34. The spindles 34 of rollers 24 are shown as projecting from fixed blocks 23 secured by their threaded ends 33 to the hanger 19, while the spindle 34 of the companion roller 25 or 25 of each pair is each secured to a pivoted arm 26 by a screw 27 towsaid hanger 19. Adjusting screws 28 in the blocks 23 bear against the arms 26 carrying the rollersv25, 25a and serve to adjust said rollers relatively to the rollers 24, 24' to afford the proper ripping and guidi action for the film'. ghe said rollers vat itlleir ends are made of increased diameter as at 29 so that the film 'by a screw 32, the arms of the spring bearing respectively against the sides of the arms 26, the screws 28 acting as stops to limit the movement of the rollers 25, 25 toward the rollers 24, 24a. As the nozzles are disposed between the upper and lower guide rollers the ilm will be caused to pass straight .between the nozzles .without rubbing land while the film is completely exposed to the action of the blasts of air issuing against the opposite sides of the iilm. Both nozzles are in communication e ually with the body 11 of the nozzle an the pressure is therefore equal within the nozzles. The two air blasts at opposite sides prevent bendin of the film under the air pressureand a so the bending tendency is minimized by the oblique angle at which the currents of air strike the film, said angle also making for the effective blowing of the water from the film.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without departure from the spirit of the invention as dened in the appended'claims.

Having thus described my invention, I claim i 1. A nozzle of the class described, havin a pair of guide rollers adjacent to sald nozzle, one of sai-d rollers being adjustable toward or from the other, spring means exertingvits force on the adjustable roller in a direction toward the other roller, and adjusting means to oppose said spring for positioning the adjustable rolle'r.`

2. A device of the class described, including a ipair of air nozzles affordin a passageway or a film therebetween, lm-guiding rollers in ixed positions respectively in front of and in the rear of said nozzles, rollers adjustabl mounted adjacent to the irst-4 mentione rollers, a spring having arms engaging respectively the adjustable rollers tending to move the same toward the fixed rollers, and adjusting means adapted to move the adjustable rollers in opposition to the said spring.

ROSCOE CONKLING HUBBARD. 

